Scanning probe lithography of self-assembled N-(2-Aminoethyl)-3- aminopropyltrimethoxysilane monolayers on SiO2 surface

Chia Hao Wu*, Jeng-Tzong Sheu, Chia Hao Chen, Tien-Sheng Chao

*此作品的通信作者

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

A new approach is introduced for the selective deposition of colloidal gold nanoparticles (AuNPs) onto the surface of unpatterned self-assembled monolayers (SAMs). The patterning of N-(2-aminoethyl)-3-aminopropyltrimethoxysilane (AEAPTMS) SAMs is realized by local field-induced bond breaking using scanning probe lithography (SPL) on a thin SiO2 surface. Different tip/sample biases were investigated to determine the bond breaking efficiency of AEAPTMS SAMs. It was found that bond breaking efficiency was limited by tunneling current through the thin SiO2 film so that both the tip bias and the tip scanning speed play important roles. AuNPs with negatively charged citrate surfaces were selectively anchored onto the unpatterned area via electrostatic force between AEAPTMS SAMs and AuNPs. Single-digit numbers of AuNPs anchored onto unpatterned AEAPTMS SAMs were demonstrated.

原文American English
頁(從 - 到)6272-6276
頁數5
期刊Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
46
發行號9 B
DOIs
出版狀態Published - 20 9月 2007

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